AMHERST — No one was injured in a fire that destroyed a storage barn behind a home on Gray Street around 4 p.m. Thursday.

By 4:15 p.m. three fire engines and several police cars had arrived at the scene and the fire, which had engulfed the structure, was almost out. Smoke billowed from the charred remains of the building, which had only two walls left standing.

Amherst fire officials said Thursday night that the state fire marshal’s office was investigating the cause of the blaze, though it is not considered suspicious.

The building at 106 Gray St. is owned by Thomas T. Gu and Ping Geng, according to deed records.

Kasie Auger, a resident from across the street at 61 Gray St., said that when she noticed the fire just after 4 p.m. fire trucks had arrived but the building was still aflame.

“It was like a huge ball of fire,” she said. Auger said she had been told that the building was not wired for electricity.